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university of the state of missouri Missouri agricultural experiment Station, Columbia, MO, april 25, 1895. Circular of information NO. 1. Chinch bugs and their extermination in reply to numerous inquiries concerning the character and methods of application of "contagious diseases" for the destructioin of chinch bugs this brief circular is issued. Character of these Infectious Diseases. It is a well known fact that many diseases attacking plants, animals and human beings are caused by very minute vegetable organisms, ,are produced from storo or exceed,( dini ly small soeds, whihe , air:e re'dily detachedt. hoit telt}e pa.et plantt and, atdherinlg to otiiher pla:nts o insects (otin i oniatiett with th, lpeetrate to Pthe interior iof i;their host;, where tlieyv rapidly grow and multiply ando soon eause the disinterat:ioo of the iorans, a.nI eventuai,lyl tvhl deat ol the plnotf or animal thus attacked. Chinchi, uo s ae esteiaOlly so tje. to three forms o these parasituie f1u,'i, Itut only ott, lnowvn as the 'White Fungus" or "Sporotricum globaliferum"th'ui,." halos been found ofi practticatl v4altue. This funigus can be 11.recgized I,y tl whit a pearance of the bus, when fully infected, caused by the spores or cells r Cells bursting through their bodies and them the appearance of being covered with flour. A large number of bugs die from the effects of this disease and do not develop this white appear- ance, but their bodies will be found filled with e fungus. Conditions Necessary for the Development of the Disease. All moulds, rusts and mildews, which are forms of fungi, require a certain degree of warmth and moisture for their growth. The "White Fungus" of the chinch bug can not be propagated, either in infeCtion cages, or in the field, until these conditions prevail This fact explains the delay in the spread of the disease so often noticed when the weather

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university of the state of missouri Missouri agricultural experiment Station, Columbia, MO, april 25, 1895. Circular of information NO. 1. Chinch bugs and their extermination in reply to numerous inquiries concerning the character and methods of application of "contagious diseases" for the destructioin of chinch bugs this brief circular is issued. Character of these Infectious Diseases. It is a well known fact that many diseases attacking plants, animals and human beings are caused by very minute vegetable organisms, ,are produced from storo or exceed,( dini ly small soeds, whihe , air:e re'dily detachedt. hoit telt}e pa.et plantt and, atdherinlg to otiiher pla:nts o insects (otin i oniatiett with th, lpeetrate to Pthe interior iof i;their host;, where tlieyv rapidly grow and multiply ando soon eause the disinterat:ioo of the iorans, a.nI eventuai,lyl tvhl deat ol the plnotf or animal thus attacked. Chinchi, uo s ae esteiaOlly so tje. to three forms o these parasituie f1u,'i, Itut only ott, lnowvn as the 'White Fungus" or "Sporotricum globaliferum"th'ui,." halos been found ofi practticatl v4altue. This funigus can be 11.recgized I,y tl whit a pearance of the bus, when fully infected, caused by the spores or cells r Cells bursting through their bodies and them the appearance of being covered with flour. A large number of bugs die from the effects of this disease and do not develop this white appear- ance, but their bodies will be found filled with e fungus. Conditions Necessary for the Development of the Disease. All moulds, rusts and mildews, which are forms of fungi, require a certain degree of warmth and moisture for their growth. The "White Fungus" of the chinch bug can not be propagated, either in infeCtion cages, or in the field, until these conditions prevail This fact explains the delay in the spread of the disease so often noticed when the weather